package com.sky.service.impl;

import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.constant.MessageConstant;
import com.sky.constant.PasswordConstant;
import com.sky.constant.StatusConstant;
import com.sky.context.BaseContext;
import com.sky.dto.EmployeeDTO;
import com.sky.dto.EmployeeLoginDTO;
import com.sky.dto.EmployeePageQueryDTO;
import com.sky.entity.Employee;
import com.sky.exception.AccountLockedException;
import com.sky.exception.AccountNotFoundException;
import com.sky.exception.PasswordErrorException;
import com.sky.mapper.EmployeeMapper;
import com.sky.result.PageResult;
import com.sky.service.EmployeeService;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.util.DigestUtils;

import java.time.LocalDateTime;
import java.util.List;

@Service
public class EmployeeServiceImpl implements EmployeeService {

    @Autowired
    private EmployeeMapper employeeMapper;

    /**
     *  @Override 新增员工
     * @param employeeDTO
     */
    public void save(EmployeeDTO employeeDTO) {
        System.out.println("当前线程的id："+Thread.currentThread().getId());
        Employee employee=new Employee();
        //对象属性拷贝
        BeanUtils.copyProperties(employeeDTO,employee);
        //设置帐号状态
        employee.setStatus(StatusConstant.ENABLE);
        //设置密码
        employee.setPassword(DigestUtils.md5DigestAsHex(PasswordConstant.DEFAULT_PASSWORD.getBytes()));
        //设置当前记录创建时间和修改时间
       // employee.setCreateTime(LocalDateTime.now());
       // employee.setUpdateTime(LocalDateTime.now());
        //设置当前记录创建人id和修改人id
       // employee.setCreateUser(BaseContext.getCurrentId());
       // employee.setCreateUser(BaseContext.getCurrentId());
        employeeMapper.insert(employee);
    }
/**
 *
 * 分页查询
 */
    public  PageResult pageQuery(EmployeePageQueryDTO employeePageQueryDTO){

        //开始分页查询
        PageHelper.startPage(employeePageQueryDTO.getPage(), employeePageQueryDTO.getPageSize());

        Page<Employee> page=employeeMapper.pageQuery(employeePageQueryDTO);
        //计入总数
        long total=page.getTotal();
        //当前页面数据集合
        List<Employee> records=page.getResult();

          return new PageResult(total,records);
    }

/**
 *
 * 启用禁用员工账号
 */

    public void startOrStop(Integer status ,Long id){
        //update employee set status  =? where id=?

        //创建一个对象
        /***
         *  Employee employee=new Employee();
         *  employee.setStatus(status);
         *         employee.setId(id);
         */

        //应用@Builder注解创建一个对象
         Employee employee= Employee.builder()
                 .status(status)
                  .id(id)
                   .build();


        employeeMapper.update(employee);

    }

/**
 * 根据id查询员工
 *
 */
public Employee getById(Long id){

     Employee employee  = employeeMapper.getById(id);
     employee.setPassword("****");
     return employee;
}
/**
 *
 * 编辑员工信息
 */
public void update(EmployeeDTO employeeDTO){
    Employee employee=new Employee();
    //属性拷贝
    BeanUtils.copyProperties(employeeDTO,employee);
    //employee.setUpdateTime(LocalDateTime.now());
    //employee.setUpdateUser(BaseContext.getCurrentId());
    employeeMapper.update(employee);
}

    /**
     * 员工登录
     *
     * @param employeeLoginDTO
     * @return
     */
    public Employee login(EmployeeLoginDTO employeeLoginDTO) {
        String username = employeeLoginDTO.getUsername();
        String password = employeeLoginDTO.getPassword();

        //1、根据用户名查询数据库中的数据
        Employee employee = employeeMapper.getByUsername(username);

        //2、处理各种异常情况（用户名不存在、密码不对、账号被锁定）
        if (employee == null) {
            //账号不存在
            throw new AccountNotFoundException(MessageConstant.ACCOUNT_NOT_FOUND);
        }

        //密码比对

        // 对前端传过来的密码进行MD5加密处理
        password=DigestUtils.md5DigestAsHex(password.getBytes());

        if (!password.equals(employee.getPassword())) {
            //密码错误
            throw new PasswordErrorException(MessageConstant.PASSWORD_ERROR);
        }

        if (employee.getStatus() == StatusConstant.DISABLE) {
            //账号被锁定
            throw new AccountLockedException(MessageConstant.ACCOUNT_LOCKED);
        }

        //3、返回实体对象
        return employee;
    }

}
